Trip mechanism for pit-cars.



H. BOLTENDAHL.

TRIP MECHANISM FOR PIT CARS.

APPLICATION FILED'AUG. 21, 1914.

Patented Oct. 27, 1914.

2 SHEETS-SHEET 1.

WITNESSES ATTORNEY THE NORRIS PETERS ca, PHOTD-LITHCL, WASHINGTON, D. C

H. BOLTENDAHL.

TRIP MECHANISM FOR PIT CARS.

APPLICATION PiLED AUG.21, 1914.

1 1 1 5,382. Patented 001;. 27, 1914.

2 SHEBTSSHEET 2.

WITNESSES I INVENTOR i/l'man 730/1? dafi/ rHE NORRIS PETERS ca, PHOTO-LITHO., \VASHINGIDN, u. c,

HERMAN BOLTENDAHL, 0F IJ'NIONTOWN, PENNSYLVANIA.

TRIP MECHANISM FOR PIT-CARS.

Specification of Letters Patent.

Patented Oct. 27, 1914.

Application filed August 21, 1914. Serial No. 857,980.

To all whom it may concern Be it known that I, HERMAN BOLTENDAHL, I

further provide said mechanism with means,

in a manner as hereinafter set forth, operated by the hoist or car traveling in the mine shaft to enable the pit or mining car to be shifted upon the hoist whereby such car can be elevated or lowered.

A further object of the invention is to provide a trip mechanism for the purpose set forth, with means capable of being extended to be engaged by the hoist whereby the trip mechanism is operated, said means being so set up whereby it can be shifted out ofthe path of the hoist so that the trip mechanism will not be operated during the elevation and lowering of a hoist.

Further objects of the invention are to provide a trip mechanism for the purpose set forth, which is simple in its construction and arrangement, strong, durable, efficient and convenient in its use, readily set up and comparatively inexpensive.

With the foregoing and other objects in view the invention consists of a novel construction, combination and arrangement of parts as hereinafter more specifically described and illustrated in the accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which come within the scope of the claims hereunto appended,

In the drawings wherem like refer ence characters denote corresponding parts throughout the several viewsz-Figure 1 is a perspective view illustrating a pit car, a mine shaft and hoist showing the adaptation therewith of a trip mechanism in accordance with this invention. Fig. 2 is a top plan view of a trip mechanism. Fig. 3 is a longitudinal sectional view of a trip mechanism.

Referring to the drawings in detail 1 and 2 denote the rails of a track, which are mounted upon ties 3. The track leads to a shaft 4, in' which is arranged a vertical movable hoist 5, provided with track rails 6, 7 adapted to aline with track rails 1, 2 whereby a car 8 can be shifted from the rails 1, 2 onto the rails 6, 7 of the hoist. In proximity to the shaft 4 a recess 8 is provided and arranged therein is a pair of blocks 9, 10 and journaled in said blocks is a shaft 11, having bearing thereagainst coil springs 12 which are interposed between the ends of the shaft and supports 13. Projecting forward from the shaft 11, is a triangular shaped member 14, the latter having its base fixed to the shaft 11 and its apex formed with a vertically disposed stop arm 15. Projecting forward from the apex of the member 14 is an arm 16, having an extension 17, hinged thereto as at 18. Arranged in the bottom of the recess 8 is a support 19, and interposed between said support and the member 14 is a coil spring 20, which normally maintains the stop 15 projecting through an opening 21 formed in a plate 22 which is arranged overthe member 14 and constitutes a cover for the recess 8. The springs 12 are connected at one end, as at 23, to the support 13 and at their other ends to the shaft 11, as at 24. When the extension 17 is swung downward, it is in the path ofthe hoist 5, so that said extension can be engaged by the hoist and lower the member 14, the latter carries the stop 15 therewith, and the car 8 can be shifted upon the platform as it will be assumed that the rails 5, 6 are then in alinement with the rails 1, 2. When the member 17 is swung backward the hoist during its travel does not actuate said trip mechanism. Shaft 11 has a weighted intermediate portion 25.

What I claim is 1. A. trip mechanism for the purpose set forth comprising a shaft, a triangular shaped member projecting forward therefrom, a vertically disposed stop carried at the forward end of said member, an arm projecting forward from the forward end of the member, an extension hinged to said arm, and a coil spring connected to said member and normally maintaining said stop projected in the path of a car.

2. A trip mechanism for the purpose set forth comprising a shaft, a triangular shaped member projecting forward therefrom, ayertically disposed stop carried at the forward end of said member, an arm projecting forward from the forward end of the member, an extension hinged to said' arm, and a coil spring connected to said member and normally maintaining said stop projected in the path of a car, andfa pair of springs having one end stationary and the other end fixed to the shaft.

A trip mechanism for the purpose set forth comprising a spring controlled rock shaft, a spring controlled triangular shaped member projecting forward therefrom, a vertically disposed stop arm carried by said member, an arm projecting forward from 15 the forward end .of said member, and an extension hinged to the forward end of said arm. 7 Y v p In testimony whereof I afliX my signature in the presence oftWo witnesses.

Y Copiesbf this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

